package com.share.cookie.history;

import com.share.cookie.entity.Book;
import com.share.cookie.util.DBUtil;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class ShowAllBooksServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter out = response.getWriter();

		out.write("本网站有以下好书：<br/>");
		Map<String, Book> books = DBUtil.findAllBooks();
		for (Map.Entry<String, Book> book : books.entrySet()) {
			out.write("<a href='"+request.getContextPath()+"/servlet/showBookDetail?id="+book.getKey()+"' target='_blank'>"+book.getValue().getName()+"</a><br/>");
		}


		out.write("<hr/>您最近浏览过的书有：<br/>");
		Cookie[] cookies = request.getCookies();
		for (int i = 0;cookies!=null && i < cookies.length; i++) {
			if("historyBookId".equals(cookies[i].getName())){//判断是否有historyBookId的cookie
				String value = cookies[i].getValue(); // 1-2-3
				String[] ids = value.split("-");
				for (int j = 0; j < ids.length; j++) {
					Book book = DBUtil.findBookById(ids[j]);//根据ID得到指定的书
					out.print(book.getName()+"<br/>");
				}
			}
		}

	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}
